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Finding the Fourth Proportional to 207,566.25, 311,349.38 and 67,324.88

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Solution

The fourth proportional to 207,566.25, 311,349.38 and 67,324.88 is: 100,987.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,566.25 : 311,349.38 = 67,324.88 : x
  2. Step 2: Convert to fraction form
    207,566.25/311,349.38 = 67,324.88/x
  3. Step 3: Cross multiply
    207,566.25x = 311,349.38 × 67,324.88
  4. Step 4: Simplify right side
    207,566.25x = 20,961,557,753.20
  5. Step 5: Solve for x
    x = 20,961,557,753.20/207,566.25
  6. Step 6: Final answer
    x = 100,987.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.